{"id":"W4388599128","doi":"10.1016/j.scitotenv.2023.168145","title":"Advancing PFAS characterization: Enhancing the total oxidizable precursor assay with improved sample processing and UV activation","year":2023,"lang":"en","type":"article","venue":"The Science of The Total Environment","topic":"Per- and polyfluoroalkyl substances research","field":"Environmental Science","cited_by":19,"is_retracted":false,"has_abstract":false,"ca_institutions":"Université de Montréal; McGill University; Royal Military College of Canada","funders":"","keywords":"Perfluorooctanoic acid; Chemistry; Acetic acid; Environmental chemistry; Sample preparation; Chromatography; Sulfonate; Aqueous solution; Organic chemistry","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0009230254,0.001251281,0.0005031874,0.0005840559,0.0003002185,0.000942656,0.0005495148,0.0008594303,0.00162261],"category_scores_gemma":[0.001679991,0.0004175647,0.0005106961,0.0003039058,0.0005181684,0.00102648,0.0004214999,0.0009169892,0.0007113738],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004156887,"about_ca_system_score_gemma":0.0008165509,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001138733,"about_ca_topic_score_gemma":0.003766675,"domain_scores_codex":[0.9991558,0.0001490502,0.0000500287,0.0002140317,0.000361268,0.00006986228],"domain_scores_gemma":[0.9994445,0.0001864382,0.00007003699,0.00005683443,0.0002139538,0.00002819393],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00004092105,0.0000145622,0.0002355794,0.00006417844,0.000007963447,0.00002303225,0.00002510547,0.0001315316,0.9937974,0.0001493573,0.00005314484,0.005457298],"study_design_scores_gemma":[0.000001875992,0.00004727854,0.0003271975,0.000004358364,0.00000651273,0.00005153883,0.00001214499,0.0009710512,0.997587,0.00006160501,0.0009254144,0.000004000124],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"methods","genre_scores_codex":[0.5197553,0.003589445,0.4668851,0.0005245861,0.0002301184,0.000579375,0.0006796863,0.001503475,0.006252854],"genre_scores_gemma":[0.6376055,0.003539953,0.3514126,0.0003596565,0.00004906785,0.0003058571,0.0005887118,0.0003060821,0.005832403],"genre_candidate":"methods","genre_consensus":null,"teacher_disagreement_score":0.00162261,"threshold_uncertainty_score":0.005428195,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009238699614118329,"score_gpt":0.230276470892692,"score_spread":0.2210377712785737,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}